JPS62100880A - Collecting method for remote data - Google Patents

Abstract

PURPOSE:To shorten the data collecting time and to decrease the repetitive transmitting frequency by performing a recording action to show a device unable to collect data in case this device is still unable to collect data even though the data collecting action is repeated by plural times. CONSTITUTION:When a set time point is decided by a time counting circuit set into a CPU 21, the CPU 21 controls a circuiting circuit LC 28 to catch a telephone circuit 3 and also to perform dial transmission to each device connected to the circuit 3. Thus data are collected successively from these devices. Here the number of a data uncollectable device if exists is stored in a RAM 23. Then the data collecting action is tried again for the data uncollectable device. when the collection of data is possible with said device, the number of the device is cleared out of the RAM 23. If another data uncollectable device is detected, the data collecting action is repeated by 2-3 times. Thus the number of a device that is unable to collect data finally is recorded on a printer 31.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for collecting data from a plurality of devices located at remote locations via a transmission line.

[Conventional technology]

In order to centrally monitor the control status of air conditioning control equipment, etc. installed at each dispersed location at a specific point, the monitoring equipment collects data from each air conditioning control equipment, etc. via telephone lines for general subscribers. Moreover, data collected using a printer or the like is recorded.

[Problem that the invention seeks to solve]

However, since a telephone line for general subscribers is used, even if a call is made to the other party's device, the exchange connection with the other party may not always be established, depending on the usage of the line, the conversation on the other party, etc.
It takes a long time to collect data from multiple devices, and if the other party is not connected, repeated calls are required, causing problems such as lowering line operation efficiency.

[Failure to solve the problem]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

In other words, in the data collection method described above, data is collected from each device at a preset time, and the data collection operation is repeated a predetermined number of times for those devices for which data cannot be collected. For devices for which data collection is not possible, data indicating the device in question is stored, and recording is performed based on this storage.

[Effect]

Therefore, at the set time, data is collected from each device, and if there is one that cannot be collected, the data collection operation is repeated multiple times for that device. If so, a record is made indicating the drawing device.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 2 is a block diagram of the entire configuration, and shows the monitoring device (hereinafter referred to as
5E) 1 is an air conditioning control device (hereinafter referred to as AC) installed in a distributed structure through subscriber telephone circuits 31 to 3n via a telephone office (hereinafter referred to as 5T) 2; ~4m, and SEI is connected to telephone line 3. A communication path is established between the AC4 and the AC4 by the exchange connection of the ST2, and when a command signal is sent from the SE1, the AC4 changes the air conditioning control status in response. Data is transmitted, SE1 receives and stores it, and repeats the above operations sequentially from AC41 to AC4m.
SEL is responsible for collecting data.

Figure 3 is a block diagram of the SEL and AC41-4m, which are mainly based on personal computers, and include processors such as microprocessors (hereinafter referred to as CPUs).
21 as the center, fixed memory (hereinafter referred to as ROM) 22, variable memory (hereinafter referred to as RAM) 23, and interfaces for various purposes (hereinafter referred to as I/F) 24 to 26 are arranged around it, and these are connected by a bus bar. I/F2 for communication
A modulator/demodulator (hereinafter referred to as MDM) 27 and a line circuit (hereinafter referred to as LC) 28 are connected to I/F 25, and a keyboard (hereinafter referred to as KB) 29 and a cathode ray tube display (hereinafter referred to as LC) are connected to I/F 25.
CRT) 30, and printer (hereinafter referred to as PRT)
31 is connected.

In addition, the MDM27 includes the LC28 and the line network control device (
It is connected to the telephone line 3 via the NCU (hereinafter referred to as NCU) 32, and depending on the operation of the NC (J32), the telephone 33 is directly connected to the telephone line 3, and calls can be made and received using this. ing.

In addition, in AC41-4m, for I/F26,
An air conditioner and air conditioning sensor actuators such as a thermometer and a hygrometer are connected, and in the case of SEL, a display panel and the like are connected as necessary.

In this 3, the CPU 21 executes the instructions in the ROM 22, makes and receives calls to the telephone line 3 under the control of the LC 2B via the I/F 24'e, sends and receives various signals and data via the MDM 27, and also sends and receives various signals and data to the I/F 25. , responds to the operation of KB29, controls CRT30 and PRT31, etc., and reads the necessary data.
Monitoring or control operations are performed while accessing AM23, and in 5F21, I/F26
In the display control of the display panel connected to AC41-4m, the air conditioner is controlled in accordance with the detected power of the air conditioning sensor.

FIG. 1 is a flowchart of the data collection situation by the SEL CPU 21, and in (A), CP[J
21 “Set time?” by the clock circuit configured inside 1
01, and if it becomes Y (YES), CPU2
Set the counter that counts the numbers of AC41 to 4m provided in 1 to "1" by [1=IJ102,
28, seizes telephone line 3 and dials AC 4, and in response to the response from the other party, "ACl
After performing "data collection" 103, [1=m? J
111, and while this is N (NO), “i=1+
1'' 112, and by repeating step 103 and subsequent steps, data collection from AC4, to AC4m is performed sequentially, and when step 111 becomes Y, these data collection operations are completed.

However, if step 103 is not possible, the number is stored in the RAM 23 and stored.

Then, the CPU 21 moves to the routine (B), and the RA
Is it impossible to collect data depending on the content of M23?2
01 is checked, and if this is Y, the above-mentioned counter is set again by [i-=l J 202, and then ``Is ACl impossible? Same as(
[C+ data collection] 211 all lines, step 111
The same as <[i=m'i'J 212 is determined, and while this is N, the same as step 112 (1-t = i + IJ2
After step 13 is performed, steps 203 and subsequent steps are repeated, and if step 212 is Y, the data collection operation is completed again.

Note that if data collection is performed at this time, the corresponding number is cleared from the RAM 23.

Further, the routine (B) is repeated two or three times if there is any data that cannot be collected.

After completing the routine (B), the CPU 21 executes (C')
According to the contents of the RAM 23, it is determined whether data collection is "impossible?" J301 in the same manner as in step 201, and if this is Y, the PRT 31 is controlled by "Print the relevant number" 302 to perform recording.

Therefore, if the set time in step 101 is set early in the morning or late at night, there is no risk that the line is busy, and there is less chance that the other party is busy, and the connection will be reliably established and data collection will be carried out smoothly. In addition, 1. If this is not possible at the time of initial data collection, the data collection operation is repeated a predetermined number of times, and this also records the data collection, which limits unnecessary repetition of transmission operations. It is said that the line operation efficiency will be improved and it will be easier to check AC4 where it is impossible for staff to collect data.

However, depending on the situation, a wireless line or the like may be used as a transmission line, and the same applies not only to AC4, ~4m, but also to various types of equipment, and the configuration shown in Figure 3 can be selected according to the conditions. While this is arbitrary, various modifications are possible in FIG. 1(C), such as recording at a desired time, such as the dispatch time of an attendant.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, when data is collected from multiple devices installed at remote locations using a transmission line with an unstable connection status, the required time and number of repeated transmissions can be reduced. This makes it possible to improve line operation efficiency and facilitate confirmation of devices from which data collection is not possible, resulting in significant effects in data collection for various purposes.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a flowchart of the data collection situation, FIG. 2 is an overall block diagram, and FIG. 3 is a block diagram of each device. 1...sg (monitoring device), 3I-3n...telephone line, 4. ~4m...AC (air conditioning control device), 21
Shosha/Bone CPU ()゛Rocessor), 22...--RO
1i'l (fixed memory), 23...RAM (variable memory), 24-26φ...I/F (interface), 2r...MDM (modulator/demodulator), 28...
...LC (line circuit).

Claims (1)

[Claims] In a method of collecting data from multiple devices installed at remote locations via transmission lines, data is collected from each of the devices at preset times, and a predetermined time limit is set for those devices for which data collection is not possible. 1. A remote data collection method characterized by repeating the data collection operation a plurality of times, and finally storing data indicating the device for which data cannot be collected, and recording based on the stored data.